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WACS ORL Membership practice questions

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Question 1Otology and Neurotology

A 45-year-old man reports sudden left-sided hearing loss that woke him from sleep two days ago, with no vertigo or ear pain. Which diagnosis must be excluded before any other consideration?

  1. Idiopathic sudden sensorineural hearing loss Correct answer.
  2. Otitis media with effusion
  3. Acoustic neuroma
  4. Meniere disease

Explanation

Sudden unilateral sensorineural hearing loss is treated as an otologic emergency once other causes are excluded. Meniere disease typically presents with episodic vertigo, fluctuating hearing, and aural fullness, while a vestibular schwannoma evolves slowly. The classic presentation of abrupt unilateral loss without vertigo fits idiopathic sudden sensorineural hearing loss.

Question 2Otology and Neurotology

Which finding on pneumatic otoscopy most directly confirms a middle ear effusion?

  1. Reduced tympanic membrane mobility Correct answer.
  2. A normal light reflex
  3. A blue-tinged tympanic membrane
  4. A retracted tympanic membrane

Explanation

Pneumatic otoscopy assesses compliance of the tympanic membrane when pressure is applied. Fluid in the middle ear reduces movement of the drum, which is the most reliable otoscopic sign of effusion. Retraction, color change, and a normal light reflex are supportive but not diagnostic.

Question 3Otology and Neurotology

A 30-year-old woman has a tympanic membrane perforation after a slap injury. Which initial management is most appropriate?

  1. Perform immediate myringoplasty
  2. Keep the ear dry and avoid instrumentation Correct answer.
  3. Start systemic corticosteroids immediately
  4. Irrigate the ear canal to clear blood

Explanation

Most traumatic tympanic membrane perforations heal spontaneously within weeks, so the priority is preventing infection by keeping the ear dry. Instrumentation, irrigation, and early surgical repair risk introducing infection and are not indicated. Steroids have no established role in simple traumatic perforation.

Question 4Otology and Neurotology

Which clinical feature most strongly suggests a peripheral rather than a central cause of vertigo?

  1. Direction-fixed horizontal nystagmus suppressed by visual fixation Correct answer.
  2. New-onset diplopia with vertigo
  3. Severe truncal ataxia with inability to stand
  4. Vertical nystagmus on primary gaze

Explanation

Peripheral vestibular lesions produce direction-fixed horizontal or torsional nystagmus that is suppressed by visual fixation. Vertical nystagmus, severe truncal instability, and brainstem signs such as diplopia point toward a central lesion. This distinction guides urgency of imaging and neurologic referral.

Question 5Otology and Neurotology

In a patient with chronic suppurative otitis media and a cholesteatoma, which surgical goal is the primary indication for surgery?

  1. Eradication of disease to prevent intracranial complications Correct answer.
  2. Restoration of normal middle ear pressure
  3. Improvement of cosmetic appearance
  4. Removal of the ossicles for pathology

Explanation

Cholesteatoma is an expanding keratinizing lesion that erodes bone and can lead to mastoiditis, facial nerve injury, and intracranial infection. The principal aim of surgery is complete eradication of disease with a safe, dry ear. Cosmetic and pressure-related goals are secondary and not the primary indication.

Question 6Otology and Neurotology

A patient with a conductive hearing loss has a normal tympanic membrane and a negative Rinne test on the affected side. Which site of lesion is most likely?

  1. Middle ear Correct answer.
  2. Brainstem auditory pathway
  3. Cochlea
  4. Auditory nerve

Explanation

A negative Rinne test with bone conduction greater than air conduction indicates a conductive loss. With a normal-appearing drum, the lesion lies in the middle ear or ossicular chain. Cochlear, nerve, and brainstem lesions produce sensorineural patterns, not a negative Rinne.

Question 7Otology and Neurotology

Which structure is most at risk during elevation of the tympanomeatal flap in middle ear surgery?

  1. The internal carotid artery
  2. The facial nerve at the stylomastoid foramen
  3. The chorda tympani nerve Correct answer.
  4. The sigmoid sinus

Explanation

The chorda tympani crosses the middle ear medial to the malleus handle and is vulnerable during flap elevation. Its injury causes taste disturbance on the anterior tongue. The facial nerve, carotid artery, and sigmoid sinus lie deeper and are not typically exposed during routine flap elevation.

Question 8Otology and Neurotology

A patient describes brief episodes of vertigo triggered by rolling over in bed, lasting under a minute without hearing loss. Which diagnosis is most likely?

  1. Meniere disease
  2. Labyrinthine fistula
  3. Vestibular neuritis
  4. Benign paroxysmal positional vertigo Correct answer.

Explanation

Brief positional vertigo lasting seconds to a minute without hearing loss is the hallmark of benign paroxysmal positional vertigo. It results from displaced otoconia in the semicircular canals. Vestibular neuritis causes prolonged vertigo, Meniere disease includes hearing fluctuation, and a fistula causes pressure-related symptoms.

Question 9Otology and Neurotology

A 12-year-old with a small central perforation and no discharge for six months has normal middle ear mucosa. Which management is most appropriate?

  1. Systemic steroids
  2. Mastoidectomy
  3. Observation with water precautions Correct answer.
  4. Topical antibiotic drops

Explanation

A dry, small central perforation without infection may be observed with water precautions, since some heal spontaneously. Topical antibiotics treat active infection, which is absent here. Mastoidectomy and systemic steroids are inappropriate for an uncomplicated dry perforation.

Question 10Otology and Neurotology

A patient with a history of chronic ear disease develops facial palsy, vertigo, and headache. Which complication should be suspected first?

  1. Eustachian tube dysfunction
  2. Benign paroxysmal positional vertigo
  3. Presbycusis
  4. Extradural abscess with petrositis Correct answer.

Explanation

The combination of facial palsy, vertigo, and headache in chronic ear disease suggests a complication such as petrositis with extradural abscess. These signs indicate spread of infection beyond the middle ear and require urgent imaging. The other options do not produce this constellation of findings.

Question 11Otology and Neurotology

Which audiometric pattern is most consistent with a conductive hearing loss?

  1. Air conduction better than bone conduction
  2. Both air and bone conduction equally reduced
  3. Air conduction worse than bone conduction with bone conduction within normal limits Correct answer.
  4. Bone conduction reduced while air conduction is normal

Explanation

Conductive loss is characterized by an air-bone gap, with air conduction thresholds worse than bone conduction while bone conduction remains normal. Equal reduction of air and bone conduction indicates sensorineural loss. Bone conduction worse than air conduction is not a physiologic pattern.

Question 12Otology and Neurotology

A 60-year-old man has a unilateral, progressive sensorineural hearing loss and tinnitus with normal tympanic membranes. Which next test is most appropriate to evaluate for a retrocochlear lesion?

  1. Contrast-enhanced MRI of the internal auditory meatus Correct answer.
  2. Tympanometry
  3. Plain radiograph of the mastoid
  4. Rinne and Weber tests

Explanation

Asymmetric progressive sensorineural hearing loss with tinnitus should prompt imaging to exclude a vestibular schwannoma. Contrast-enhanced MRI of the internal auditory meatus is the study of choice. Plain films, tympanometry, and tuning forks cannot exclude a retrocochlear lesion.

Question 13Otology and Neurotology

In Meniere disease, which combination of symptoms defines the classic attack?

  1. Brief positional vertigo with normal hearing
  2. Constant vertigo with progressive hearing loss and facial palsy
  3. Sudden hearing loss with no vestibular symptoms
  4. Episodic vertigo with fluctuating hearing loss, tinnitus, and aural fullness Correct answer.

Explanation

Meniere disease is defined by recurrent spontaneous vertigo lasting minutes to hours, accompanied by fluctuating sensorineural hearing loss, tinnitus, and aural fullness. Constant vertigo with facial palsy suggests a different process. Positional vertigo without hearing loss and isolated sudden hearing loss do not fit the definition.

Question 14Otology and Neurotology

Which maneuver is used to treat posterior canal benign paroxysmal positional vertigo?

  1. Dix-Hallpike maneuver
  2. Head impulse test
  3. Valsalva maneuver
  4. Epley canalith repositioning maneuver Correct answer.

Explanation

The Epley maneuver is a canalith repositioning procedure that moves displaced otoconia out of the posterior canal to relieve symptoms. The Dix-Hallpike maneuver is diagnostic, not therapeutic. The head impulse test assesses the vestibulo-ocular reflex, and the Valsalva maneuver is not a treatment.

Question 15Otology and Neurotology

A patient has a perforated tympanic membrane and develops purulent discharge with pain after swimming. Which treatment is most appropriate?

  1. Topical antibiotic drops with water avoidance Correct answer.
  2. Immediate tympanoplasty
  3. Ear irrigation with saline
  4. Oral corticosteroids alone

Explanation

An infected perforation with discharge is treated with topical antibiotics effective against common pathogens, plus keeping the ear dry. Steroids alone do not treat infection, and surgery is deferred until infection resolves. Irrigation can worsen contamination and is contraindicated.

Question 16Otology and Neurotology

Which nerve is tested by the head impulse test in a patient with acute vertigo?

  1. The facial nerve
  2. The trigeminal nerve
  3. The vestibular division of the eighth cranial nerve Correct answer.
  4. The hypoglossal nerve

Explanation

The head impulse test assesses the vestibulo-ocular reflex mediated by the vestibular division of the eighth cranial nerve. An abnormal corrective saccade suggests a peripheral vestibular deficit. The facial, trigeminal, and hypoglossal nerves are not assessed by this maneuver.

Question 17Otology and Neurotology

A patient with a large central perforation has a 30 dB conductive hearing loss. Which factor most affects the degree of conductive loss?

  1. The size and location of the perforation relative to the ossicular chain Correct answer.
  2. The presence of tinnitus
  3. The patient's age
  4. The color of the tympanic membrane remnant

Explanation

Conductive loss from a perforation depends mainly on its size and its position relative to the ossicular chain, since the intact drum and ossicles couple sound to the cochlea. Larger perforations and those involving the ossicles cause greater loss. Color, tinnitus, and age do not determine the conductive deficit.

Question 18Otology and Neurotology

Which finding on otoscopy is most characteristic of a cholesteatoma?

  1. A retraction pocket containing keratin debris in the pars flaccida Correct answer.
  2. A uniformly pink, translucent tympanic membrane
  3. A blue drum with fluid levels
  4. A small central perforation with clear margins

Explanation

Cholesteatoma often presents as a retraction pocket in the pars flaccida filled with keratin debris, sometimes with foul discharge. A translucent drum, a simple central perforation, and a blue drum with fluid suggest other conditions. Recognition of the retraction pocket is key to early diagnosis.

Question 19Otology and Neurotology

A patient reports hearing better in a noisy environment and has a conductive hearing loss. Which phenomenon does this describe?

  1. Tinnitus
  2. Recruitment
  3. Paracusis Willisii Correct answer.
  4. Diplacusis

Explanation

Paracusis Willisii is the paradoxical improvement in hearing in noisy surroundings, classically associated with conductive hearing loss from otosclerosis. Recruitment is abnormal loudness growth in sensorineural loss, while tinnitus and diplacusis are different auditory symptoms. The phenomenon reflects reduced masking by ambient noise.

Question 20Otology and Neurotology

A young adult with progressive conductive hearing loss and a normal tympanic membrane has a family history of similar hearing loss. Which diagnosis is most likely?

  1. Presbycusis
  2. Vestibular schwannoma
  3. Noise-induced hearing loss
  4. Otosclerosis Correct answer.

Explanation

Progressive conductive hearing loss in a young adult with a normal drum and a positive family history suggests otosclerosis, caused by abnormal bone remodeling at the stapes footplate. Presbycusis and noise-induced loss are sensorineural, and vestibular schwannoma causes asymmetric sensorineural loss. The conductive pattern is the key discriminator.

Question 21Otology and Neurotology

Which structure connects the middle ear to the mastoid air cells?

  1. The oval window
  2. The aditus ad antrum Correct answer.
  3. The Eustachian tube
  4. The round window

Explanation

The aditus ad antrum is the passage connecting the epitympanum of the middle ear to the mastoid antrum and air cells. The oval and round windows are openings to the inner ear, and the Eustachian tube connects the middle ear to the nasopharynx. This pathway explains the spread of middle ear infection to the mastoid.

Question 22Otology and Neurotology

A patient with acute vestibular neuritis has severe vertigo, nausea, and horizontal nystagmus with an abnormal head impulse test. Which management is most appropriate initially?

  1. Urgent mastoidectomy
  2. Immediate systemic antibiotics
  3. Short course of vestibular suppressants and antiemetics with early mobilization Correct answer.
  4. Long-term bed rest for two weeks

Explanation

Acute vestibular neuritis is managed with short-term vestibular suppressants and antiemetics for symptom control, followed by early mobilization to promote central compensation. Antibiotics and surgery have no role, and prolonged bed rest delays recovery. The abnormal head impulse test supports a peripheral cause.

Question 23Otology and Neurotology

A patient has a conductive hearing loss and a normal tympanic membrane with a family history of otosclerosis. Which audiometric finding most supports the diagnosis?

  1. A Carhart notch with reduced bone conduction at 2 kHz Correct answer.
  2. A profound sensorineural loss at all frequencies
  3. Normal bone conduction with no air-bone gap
  4. A rising sensorineural loss at high frequencies

Explanation

The Carhart notch is a characteristic dip in bone conduction at 2 kHz caused by stapes fixation in otosclerosis. Profound sensorineural loss and high-frequency sensorineural loss do not fit the conductive pattern. A normal bone conduction without an air-bone gap would not indicate conductive loss.

Question 24Otology and Neurotology

A patient with chronic otitis media and a cholesteatoma develops vertigo and nystagmus. Which complication is most likely?

  1. Presbycusis
  2. Otosclerosis
  3. Serous otitis media
  4. Labyrinthine fistula Correct answer.

Explanation

Cholesteatoma can erode the bony labyrinth, creating a labyrinthine fistula that presents with vertigo and nystagmus, sometimes triggered by pressure. Serous otitis media, otosclerosis, and presbycusis do not cause this acute vestibular presentation. Prompt imaging and surgical planning are required.

Question 25Otology and Neurotology

A patient with a history of temporal bone trauma has a conductive hearing loss and a normal tympanic membrane. Which injury is most likely?

  1. Presbycusis
  2. Ossicular chain disruption Correct answer.
  3. Vestibular schwannoma
  4. Cochlear hair cell loss

Explanation

Temporal bone trauma can disrupt the ossicular chain while leaving the tympanic membrane intact, producing a conductive loss. Cochlear hair cell loss and vestibular schwannoma cause sensorineural loss, and presbycusis is age-related. The combination of trauma, conductive loss, and an intact drum points to ossicular injury.

Question 26Otology and Neurotology

A 45-year-old teacher reports gradual hearing loss in the left ear and tinnitus. Otoscopy is normal. Pure-tone audiometry shows a left-sided sensorineural hearing loss with a pure-tone average of 45 dB and a word recognition score of 88% in quiet. Which intervention is most appropriate to improve communication in background noise?

  1. A cochlear implant
  2. A left-sided bone-anchored hearing aid
  3. A left-sided conventional hearing aid with noise reduction Correct answer.
  4. Observation with annual audiometry

Explanation

For mild-to-moderate sensorineural hearing loss with preserved word recognition, a conventional hearing aid with noise reduction is the standard first-line rehabilitation. Bone-anchored devices are indicated for conductive or mixed losses, and cochlear implantation is reserved for severe-to-profound loss with poor speech understanding. Observation alone would not address the reported communication difficulty.

Question 27Otology and Neurotology

A 30-year-old woman reports a 6-month history of episodic vertigo lasting hours, left aural fullness, and fluctuating hearing loss. Audiometry during an attack shows a low-frequency sensorineural loss. Which finding on examination is most consistent with this disorder?

  1. Downbeat nystagmus on upward gaze
  2. Unidirectional horizontal nystagmus during an acute attack Correct answer.
  3. A positive Dix-Hallpike maneuver
  4. A positive Romberg test with loss of proprioception

Explanation

Meniere disease attacks are typically accompanied by spontaneous horizontal nystagmus beating away from the affected ear during the acute episode. Downbeat nystagmus suggests a central lesion, and a positive Dix-Hallpike maneuver indicates benign paroxysmal positional vertigo. Proprioceptive loss is unrelated to the endolymphatic hydrops of Meniere disease.

Question 28Otology and Neurotology

A 55-year-old man has a 1.5 cm left vestibular schwannoma confined to the internal auditory canal. He has serviceable hearing (pure-tone average 30 dB, word recognition 80%) and no brainstem compression. Which management strategy is most appropriate?

  1. Stereotactic radiosurgery to the tumor
  2. Observation with serial MRI and audiometry Correct answer.
  3. Translabyrinthine resection
  4. Middle fossa craniotomy for tumor removal

Explanation

Small intracanalicular vestibular schwannomas with serviceable hearing can be safely observed with serial MRI and audiometry because many grow slowly or not at all. Translabyrinthine resection sacrifices hearing and is not appropriate when hearing is serviceable. Radiosurgery and middle fossa surgery are reasonable alternatives but are not the preferred initial strategy for a small tumor with good hearing.

Question 29Otology and Neurotology

A 70-year-old man presents with sudden left-sided hearing loss and tinnitus that began 3 days ago. Otoscopy is normal. Which initial management is most appropriate?

  1. A 10-day course of oral antibiotics
  2. Reassurance and repeat audiometry in 3 months
  3. Intratympanic gentamicin
  4. Oral corticosteroids with urgent MRI of the internal auditory canals Correct answer.

Explanation

Sudden sensorineural hearing loss is treated as an otologic emergency, with high-dose corticosteroids started promptly and MRI to exclude a retrocochlear lesion such as vestibular schwannoma. Antibiotics and intratympanic gentamicin have no role in this condition. Delayed audiometry would miss the window for corticosteroid benefit.

Question 30Otology and Neurotology

A 40-year-old woman has a 2-year history of left-sided pulsatile tinnitus. Otoscopy shows a reddish-blue mass behind the tympanic membrane in the inferior mesotympanum. Which diagnosis is most likely?

  1. Vestibular schwannoma
  2. Cholesteatoma
  3. Glomus tympanicum Correct answer.
  4. Otosclerosis

Explanation

A pulsatile tinnitus with a reddish-blue retrotympanic mass in the inferior mesotympanum is characteristic of a glomus tympanicum paraganglioma. Otosclerosis causes conductive hearing loss without a vascular mass, and cholesteatoma appears as a retraction pocket with keratin debris. Vestibular schwannoma causes non-pulsatile sensorineural hearing loss.

Question 31Otology and Neurotology

A 25-year-old man has a 4 mm central tympanic membrane perforation after a slap injury. There is no discharge, and audiometry shows a 15 dB conductive loss. Which initial management is most appropriate?

  1. Paper patch myringoplasty
  2. Topical antibiotic-steroid drops
  3. Immediate tympanoplasty
  4. Observation with water precautions for 6 weeks Correct answer.

Explanation

Most small traumatic tympanic membrane perforations heal spontaneously within weeks, so initial management is observation with avoidance of water entry to prevent infection. Immediate surgery is reserved for persistent perforation after several months. Topical drops are not indicated for a dry perforation, and patching is considered only if healing stalls.

Question 32Otology and Neurotology

A 65-year-old woman has a 5-year history of right-sided hearing loss and intermittent otorrhea. Examination shows a retraction pocket in the pars flaccida with white keratin debris. Which complication is most directly associated with this condition?

  1. Endolymphatic hydrops
  2. Otosclerosis
  3. Ossicular erosion Correct answer.
  4. Presbycusis

Explanation

A pars flaccida retraction pocket with keratin debris indicates cholesteatoma, which erodes adjacent bone and commonly damages the incus and stapes, causing conductive hearing loss. Presbycusis and otosclerosis are unrelated to keratinizing disease. Endolymphatic hydrops is a disorder of the inner ear and is not a direct complication of cholesteatoma.

Question 33Otology and Neurotology

A 50-year-old man has a 6-month history of right-sided hearing loss and intermittent clear watery discharge from the right ear. Otoscopy shows an intact tympanic membrane with a subtle blueish tint. Beta-2 transferrin testing of the fluid is positive. Which structure is the most likely source of the leak?

  1. The tegmen tympani Correct answer.
  2. The eustachian tube
  3. The external auditory canal skin
  4. The round window membrane

Explanation

Positive beta-2 transferrin confirms cerebrospinal fluid, and a middle ear leak with an intact tympanic membrane most often arises from a defect in the tegmen tympani. The round window is a rare source, and the eustachian tube and ear canal skin do not produce cerebrospinal fluid. Imaging with high-resolution CT or MRI cisternography can localize the defect.

Question 34Otology and Neurotology

A 28-year-old woman has a 1-year history of left-sided hearing loss. Audiometry shows a conductive loss with a normal tympanic membrane. Acoustic reflexes are absent on the left, and high-resolution CT shows a lucency at the fissula ante fenestram. Which treatment is most appropriate?

  1. A hearing aid trial only
  2. Observation
  3. Oral sodium fluoride
  4. Stapedotomy Correct answer.

Explanation

The findings of progressive conductive hearing loss, absent acoustic reflexes, and a lucency at the fissula ante fenestram are diagnostic of otosclerosis. Stapedotomy is the definitive treatment for otosclerosis when hearing rehabilitation is desired. Sodium fluoride is not standard therapy, and observation or a hearing aid alone would not address the fixed stapes.

Question 35Otology and Neurotology

A 35-year-old man has a 2-day history of severe vertigo, nausea, and vomiting. Examination shows spontaneous horizontal nystagmus beating to the right, and the head impulse test is abnormal to the left. Which diagnosis is most likely?

  1. Right vestibular neuritis
  2. Posterior canal benign paroxysmal positional vertigo
  3. Left vestibular neuritis Correct answer.
  4. Meniere disease

Explanation

Acute prolonged vertigo with an abnormal head impulse test to the left and nystagmus beating away from the affected side indicates left vestibular neuritis. Benign paroxysmal positional vertigo causes brief positional symptoms, and Meniere disease includes hearing loss and aural fullness. Right vestibular neuritis would produce an abnormal head impulse test to the right.

Question 36Otology and Neurotology

A 60-year-old woman has a 3-year history of right-sided hearing loss and intermittent foul-smelling discharge. Examination shows a large central perforation with cholesteatoma and a 40 dB conductive hearing loss. Which factor most strongly predicts the degree of conductive loss?

  1. The status of the ossicular chain Correct answer.
  2. The size of the perforation
  3. The duration of the disease
  4. The presence of otorrhea

Explanation

The degree of conductive hearing loss in chronic otitis media is determined primarily by the integrity of the ossicular chain, especially the incus and stapes. Perforation size affects loss only modestly, and otorrhea and disease duration do not directly determine the audiometric gap. Ossicular erosion is common with cholesteatoma and can produce a loss exceeding 40 dB.

Question 37Otology and Neurotology

A 45-year-old man has a 6-month history of right-sided hearing loss and tinnitus. Audiometry shows a right-sided sensorineural loss, and speech discrimination is disproportionately poor. Which test is most appropriate to evaluate for a retrocochlear lesion?

  1. Tympanometry
  2. MRI of the internal auditory canals with gadolinium Correct answer.
  3. CT of the temporal bones
  4. Otoacoustic emissions

Explanation

Asymmetric sensorineural hearing loss with poor speech discrimination raises suspicion for a retrocochlear lesion such as vestibular schwannoma, and gadolinium-enhanced MRI of the internal auditory canals is the definitive test. CT of the temporal bones is better for bony erosion and does not reliably detect small intracanalicular tumors. Tympanometry and otoacoustic emissions assess middle ear and cochlear function, respectively.

Question 38Otology and Neurotology

A 70-year-old man has a 10-year history of progressive hearing loss in both ears. Audiometry shows a high-frequency sensorineural loss with a pure-tone average of 55 dB and word recognition of 72% in quiet. Which factor most limits his speech understanding in noisy environments?

  1. Eustachian tube dysfunction
  2. Ossicular fixation
  3. Increased stiffness of the tympanic membrane
  4. Reduced frequency selectivity from outer hair cell loss Correct answer.

Explanation

Age-related sensorineural hearing loss involves outer hair cell loss that degrades frequency selectivity and temporal processing, which impairs speech understanding in noise out of proportion to the pure-tone threshold. Ossicular fixation and tympanic membrane stiffness cause conductive loss, and eustachian tube dysfunction causes middle ear effusion. None of these explain the sensorineural pattern described.

Question 39Otology and Neurotology

A 55-year-old woman has a 1-year history of left-sided hearing loss and intermittent clear discharge. Examination shows a small perforation with a visible pulsating mass in the middle ear. Which imaging study is most appropriate to characterize the lesion?

  1. High-resolution CT of the temporal bones Correct answer.
  2. MRI with gadolinium
  3. Ultrasound of the neck
  4. Plain radiography of the skull

Explanation

A pulsating middle ear mass with clear discharge suggests a vascular tumor such as a glomus tympanicum or glomus jugulare, and high-resolution CT of the temporal bones defines the extent of bony involvement. MRI with gadolinium can show soft tissue extent but is less useful for defining bony erosion. Plain radiography and neck ultrasound do not provide adequate detail.

Question 40Otology and Neurotology

A 40-year-old woman has a 2-year history of episodic vertigo lasting minutes, left aural fullness, and fluctuating hearing loss. Which medication is most appropriate for prophylaxis of her attacks?

  1. Betahistine
  2. A low-salt diet with a thiazide diuretic Correct answer.
  3. Intratympanic gentamicin
  4. Oral prednisone for 2 weeks

Explanation

Dietary salt restriction combined with a thiazide diuretic is a standard first-line prophylactic strategy for Meniere disease and is supported by randomized evidence. Intratympanic gentamicin is reserved for intractable vertigo after conservative therapy fails. Oral corticosteroids are used for sudden sensorineural hearing loss, and betahistine has limited evidence and is not available in many countries.

Question 41Rhinology and Sinus Surgery

A patient reports clear, watery rhinorrhea that worsens with cold air and emotional stress, plus sneezing in bright sunlight. Which diagnosis best fits this pattern?

  1. Vasomotor rhinitis Correct answer.
  2. Cerebrospinal fluid rhinorrhea
  3. Allergic rhinitis
  4. Atrophic rhinitis

Explanation

Vasomotor (non-allergic, non-infectious) rhinitis produces clear rhinorrhea and sneezing triggered by nonspecific stimuli such as cold air, odors, and emotional stress. Allergic rhinitis instead requires allergen exposure and typically shows itching and positive sensitization testing.

Question 42Rhinology and Sinus Surgery

Which symptom is most characteristic of chronic rhinosinusitis with nasal polyps?

  1. Unilateral epistaxis
  2. Severe frontal headache only
  3. Anosmia or hyposmia Correct answer.
  4. Facial numbness

Explanation

Reduced or absent smell is a hallmark of chronic rhinosinusitis with nasal polyps because polyps and mucosal edema obstruct the olfactory cleft. Epistaxis, facial numbness, and isolated headache are not typical features and should prompt consideration of other pathology.

Question 43Rhinology and Sinus Surgery

A patient develops profuse, clear rhinorrhea after endoscopic skull base surgery. Which initial confirmatory test is most appropriate?

  1. Beta-2 transferrin assay of the fluid Correct answer.
  2. Plain sinus radiograph
  3. Nasal cytology for eosinophils
  4. Serum total IgE

Explanation

Beta-2 transferrin is highly specific for cerebrospinal fluid, so detecting it in nasal secretions confirms a CSF leak. Eosinophil counts, IgE, and plain radiographs do not distinguish CSF from other clear rhinorrhea.

Question 44Rhinology and Sinus Surgery

Which structure forms the medial wall of the maxillary sinus?

  1. Lateral nasal wall Correct answer.
  2. Orbital floor
  3. Nasal septum
  4. Posterior wall of the nasopharynx

Explanation

The medial wall of the maxillary sinus is the lateral nasal wall, which contains the natural ostium and the fontanelles. The septum is midline, the orbital floor is the roof, and the nasopharynx lies posterior to the nasal cavity.

Question 45Rhinology and Sinus Surgery

Which agent is used topically to decongest the nasal mucosa for a short period before endoscopy?

  1. Oxymetazoline Correct answer.
  2. Ipratropium bromide
  3. Montelukast
  4. Fluticasone

Explanation

Oxymetazoline is an alpha-adrenergic agonist that constricts mucosal vessels and reduces swelling within minutes, aiding endoscopic visualization. Fluticasone is a steroid with delayed anti-inflammatory effect, ipratropium reduces secretions, and montelukast is an oral leukotriene modifier.

Question 46Rhinology and Sinus Surgery

A patient with recurrent anterior epistaxis has visible vessels on the anterior nasal septum. Which treatment is first-line?

  1. Internal maxillary artery ligation
  2. Posterior nasal packing
  3. Systemic tranexamic acid
  4. Chemical cautery of the septal vessel Correct answer.

Explanation

Anterior epistaxis from visible septal vessels, typically in Little's area, is best managed initially by chemical or electrocautery. Posterior packing, arterial ligation, and systemic antifibrinolytics are reserved for more severe or refractory bleeding.

Question 47Rhinology and Sinus Surgery

Which finding on CT most strongly suggests an invasive fungal sinusitis rather than allergic fungal rhinosinusitis?

  1. Bilateral nasal polyposis
  2. Mucosal thickening of the ethmoids
  3. Bone erosion with soft tissue extension beyond the sinus Correct answer.
  4. Hyperdense material within a single sinus

Explanation

Invasive fungal sinusitis is characterized by tissue invasion with bone destruction and extrasinus extension, often into the orbit or skull base. Allergic fungal rhinosinusitis typically shows hyperdense sinus material and polyposis without aggressive bone erosion.

Question 48Rhinology and Sinus Surgery

Which maneuver is used to assess for nasal valve collapse during inspiration?

  1. Dix-Hallpike maneuver
  2. Cottle maneuver Correct answer.
  3. Epley maneuver
  4. Valsalva maneuver

Explanation

The Cottle maneuver gently lateralizes the cheek or nasal sidewall to open the nasal valve; improvement in airflow suggests valve collapse. Valsalva tests for pressure effects, while Epley and Dix-Hallpike are vestibular tests.

Question 49Rhinology and Sinus Surgery

A patient with aspirin-exacerbated respiratory disease typically presents with which triad?

  1. Nasal polyps, asthma, and aspirin sensitivity Correct answer.
  2. Rhinorrhea, cough, and weight loss
  3. Unilateral obstruction, epistaxis, and facial numbness
  4. Epistaxis, septal perforation, and anosmia

Explanation

Aspirin-exacerbated respiratory disease classically combines nasal polyposis, asthma, and hypersensitivity to aspirin or other COX-1 inhibitors. The other combinations suggest structural, neoplastic, or systemic disease rather than this syndrome.

Question 50Rhinology and Sinus Surgery

A patient with allergic rhinitis remains symptomatic despite intranasal corticosteroid and antihistamine therapy. Which add-on is most appropriate for persistent moderate-severe disease?

  1. Intranasal ipratropium
  2. Oral decongestant
  3. Leukotriene receptor antagonist Correct answer.
  4. Saline irrigation alone

Explanation

Leukotriene receptor antagonists such as montelukast can be added for persistent moderate-severe allergic rhinitis when first-line intranasal steroids and antihistamines are insufficient. Ipratropium targets rhinorrhea, decongestants give short-term relief, and saline alone is adjunctive.